Annual report pursuant to Section 13 and 15(d)

PENSION PLANS. (Details 3)

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PENSION PLANS. (Details 3) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Components of net periodic benefit costs are as follows:    
Gain recognized in other comprehensive income $ (89) $ 225
Postretirement Plan [Member]    
Amounts recognized in the plan for the year:    
Company contributions 171 137
Participant contributions 24 14
Benefits paid (195) (152)
Components of net periodic benefit costs are as follows:    
Service cost 67 83
Interest cost 219 182
Amortization of prior service costs 122 131
Net periodic benefit cost 408 396
Gain recognized in other comprehensive income $ (674) $ (118)
Discount rate used in computation of benefit obligations 2.95% 3.35%